Database Users

Why does it take 1 year for the battery to charge?

Sarcasm, haha laugh a little.
But really, do you guys notice that it takes a long time for the battery to charge?
I think when available, I'll buy a bunch of batteries just to have handy.

well the battery is 1500mAh the nexus charged pretty quickly but it was 1400mAh i am not sure how much difference 100mAh will make on charging the battery but that could be a possibility.

Charging with the computer will always be slower, if that's what you're using.

I wonder if its the charger. The provided charger has an output rating of 0.7A. I know some microusb chargers I have seen are rated as high as 1.0A. That could be the difference.

soklean said:
well the battery is 1500mAh the nexus charged pretty quickly but it was 1400mAh i am not sure how much difference 100mAh will make on charging the battery but that could be a possibility.
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Click to collapse
I was thinking the same thing...hhmm could 100mAh make that much of a difference?

heygrl said:
Charging with the computer will always be slower, if that's what you're using.
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Click to collapse
I always try to avoid using the computer to charge my phone. It just seems to take awfully long even plugged into the wall.

landale said:
I wonder if its the charger. The provided charger has an output rating of 0.7A. I know some microusb chargers I have seen are rated as high as 1.0A. That could be the difference.
Click to expand...
Click to collapse
Interesting...that could be. However, maybe it's 0.7A for a reason? Perhaps the battery needs to have it at that "flow rate." ???

We did get a different charger over the i9000, they had a separate USB cable and microUSB wall charger. We obviously don't have that setup.
Some phones have Li-Pol batteries and they have to charge differently. This could be why it's taking so long to recharge.

check a tmobile store or website for the new portable micro usb charger. charges your phone on the go and recharges itself via a usb charger the vibrant ships with or your computer. i got mine and was a lifesaver the other night when i needed to leave my house with 10% charged.

I hate saying this, but: I literally LOL'd from the title of this thread.
I completely agree. Charging takes fuggin' forever. My guess would be that turning the device off helps speed this up, tremendously. But of course, who wants to do that?
That said, battery life has been impressively long, provided you turn off Samsung's widgets. :/

iunlock said:
Interesting...that could be. However, maybe it's 0.7A for a reason? Perhaps the battery needs to have it at that "flow rate." ???
Click to expand...
Click to collapse
That would be a huge design oversight if a generic charger caused problems with the battery. I'm sure Samsung thought about the user charging with a generic charger.

Mine charges pretty fast I'm using the usb that came with the moto cliq

iceshinobi said:
Mine charges pretty fast I'm using the usb that came with the moto cliq
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Click to collapse
How fast is fast, iceshinobi?

I have conditioned my battery twice and going from empty with the phone off and pluged into the wall not via usb-pc, took me over 4hrs each time.
If the charger is 0.7 going to a 1.0 would be a huge improvement. The only worry would be the extra heat and problems that might cause. With NiMH batteries quick charging is preferable to slow charging, is this the same for Li-ion?

came here for insight as well, woke up at like 5am, phone was almost dead, 10% battery or so
turned it off, plugged it in to the wall charger and it is now 8am and it is maybe 60-70% charged
what the hell?
with my g1 turned off i can go from 0 to 100% charge in like an hour or so using a USB port. now i know the battery is smaller but c'mon... this is ridiculous.

Could it be that the phone just has to break in? When I first got G1 it would take about 4 hours to charge I remember, now a year and a half later I can get it to 80-90 percent in 1 and a half.

The computer USB standard is 100 to 500 milliamp, the USB walloulet adapter (charger) Is 700 milliamp, our batteries are 1500 milliamp and that's why.
USB cables have a certain standards witch includes voltage and current standards.
If you want a fast charger look for a hard wired 1000-1200 milliamp charger with a micro USB connector on ebay.

siberslug said:
The computer USB standard is 100 to 500 milliamp, the USB walloulet adapter (charger) Is 700 milliamp, our batteries are 1500 milliamp and that's why.
USB cables have a certain standards witch includes voltage and current standards.
If you want a fast charger look for a hard wired 1000-1200 milliamp charger with a micro USB connector on ebay.
Click to expand...
Click to collapse
Interesting...having a 1000+ milliamp charger shouldn't cause heat issues would it for pumping in more juice at a higher rate?

Z3 Battery Charging Thread

Hiya,
I'm copying my original post over from the Z3 Compact forum as there should be a fair amount of similarities between the two models regarding battery charging.
Hiya,
I' hoping this is the right section to post this in.
I don't have my Z3C yet, but I've been searching for information on charging speed, charging current etc. - and there is barely anything to be found. What seems to be consent: A full charge (0-100%) takes about three hours. But then, some people say an almost full charge (0-90%) takes much less, as charging current is greatly reduced for the last 10% to reduce stress on the battery. Sony itself also claims that a small charge (something like 0-10%) should be quite fast as well.
Then there's some speculation about QuickCharge 2.0 being used or not used, that you could use a Motorola 2.0A charger to charge it faster than with the provided 1.5A Sony charger etc., which also brings up the question which resistor values on the D+ and D- wires are necessary to toggle different charging currents. (Or I might be stupid and there's a standard for that by now, which is the same for all Qualcomm devices.)
To cut it short: I'd request those who have a Z3C to post some comments about their charging times, and at best even their charging currents. I used an app called BatteryMonitor on my Desire HD, I'm sure there's others around now that give the same information. If someone could try out different chargers and record charging current over time, maybe even with a pretty graph, it'd surely help all future discussions about chargers, docks, modifications, DIY charging issues etc.
Click to expand...
Click to collapse
So, as the same goes for the Z3: If someone can record their charging times, charging current and charger used: Go ahead and post it. Bonus points for taking a look at magnetic charging.

dragonfet said:
Hiya,
I'm copying my original post over from the Z3 Compact forum as there should be a fair amount of similarities between the two models regarding battery charging.
So, as the same goes for the Z3: If someone can record their charging times, charging current and charger used: Go ahead and post it. Bonus points for taking a look at magnetic charging.
Click to expand...
Click to collapse
A recent tear down confirms the Qualcomm chip for Quick Charge 2.0 support, so what we need now is for someone to get a compatible PSU that can 'talk' to the phone and then supply more power. That should see a huge improvement in charge time.
I am just trying to find a source for a compatible charger. So far I've only seen the Motorola Turbo Charger in the USA, and I'd be wary of buying anything made by a no-name brand at this point.
I have to assume the magnetic charging option won't be as fast, simply as there can't be a way for the PSU to know it is connected to a compatible device. Quick Charge 2.0 appears to require some sort of handshaking, or else the PSU will limit the power output, hence why I'd be wary of any chargers appearing on eBay or Amazon that claim to offer fast charging.

jonmorris said:
A recent tear down confirms the Qualcomm chip for Quick Charge 2.0 support, so what we need now is for someone to get a compatible PSU that can 'talk' to the phone and then supply more power. That should see a huge improvement in charge time.
I am just trying to find a source for a compatible charger. So far I've only seen the Motorola Turbo Charger in the USA, and I'd be wary of buying anything made by a no-name brand at this point.
I have to assume the magnetic charging option won't be as fast, simply as there can't be a way for the PSU to know it is connected to a compatible device. Quick Charge 2.0 appears to require some sort of handshaking, or else the PSU will limit the power output, hence why I'd be wary of any chargers appearing on eBay or Amazon that claim to offer fast charging.
Click to expand...
Click to collapse
I have read excellent reviews for the Blackberry Premium Charger (the one with the yellow tip), super cheap on Amazon right now. Recommended by Android Central and others for its 2A charging capability. I have used it in the past from my HTC One X days and have re ordered for my Z3. Honestly, my Z3 is charging more than fast enough with the OEM supplied charger, which may be less powerful but more optimised than another OEM's charger. The one I'd trust most if I was forced to use one would be the above model of the BB charger.

jonmorris said:
I have to assume the magnetic charging option won't be as fast, simply as there can't be a way for the PSU to know it is connected to a compatible device. Quick Charge 2.0 appears to require some sort of handshaking, or else the PSU will limit the power output, hence why I'd be wary of any chargers appearing on eBay or Amazon that claim to offer fast charging.
Click to expand...
Click to collapse
more power can either be achieved through more voltage (that could potentially be harmful if the hardware is not compatible) or more current. More current is 100% save as the charging circuit just takes what it needs, independent of the (more potent) capabilities of the charger.
As Oppo showed with its find 7 just raising the current is a viable option which works. This is also a Snapdragon 801 device.

With the 1.5A original charger and cable, using Battery Monitor Widget shows the charging rate at around 900mA to 1000mA.
So I guess Z3 is restricting to max 1A charging?

jonmorris said:
I have to assume the magnetic charging option won't be as fast, simply as there can't be a way for the PSU to know it is connected to a compatible device. Quick Charge 2.0 appears to require some sort of handshaking, or else the PSU will limit the power output, hence why I'd be wary of any chargers appearing on eBay or Amazon that claim to offer fast charging.
Click to expand...
Click to collapse
Would it be possible that the PSU simply always limits the power output? For example, the phone might try to draw 1.5A, but the PSU doesn't support it and limits at 1.0A. Then magnetic charging could work with 1.5A or even 2.0A without the need for communication over the D+ / D- pins. (And attaching the magnetic port with a USB adapter to a PC or Laptop might cause the USB Port to shut down and trigger an overcurrent warning.)
AKK03 said:
With the 1.5A original charger and cable, using Battery Monitor Widget shows the charging rate at around 900mA to 1000mA.
So I guess Z3 is restricting to max 1A charging?
Click to expand...
Click to collapse
That would make sense. Though wonder where the extra 500 mA are going, it surely can't be the phone's standby. And given a typical maximum charging current of 1.0C (C = battery capacity), it would translate into 3.1A of charging current and therefore a 3.5A power supply.
Is this current constant from 1% to about 65%?

AKK03 said:
With the 1.5A original charger and cable, using Battery Monitor Widget shows the charging rate at around 900mA to 1000mA.
So I guess Z3 is restricting to max 1A charging?
Click to expand...
Click to collapse
If there are restrictions they are most likely within the Kernel and we may be able to change them in the future with custom Kernels

dragonfet said:
That would make sense. Though wonder where the extra 500 mA are going, it surely can't be the phone's standby. And given a typical maximum charging current of 1.0C (C = battery capacity), it would translate into 3.1A of charging current and therefore a 3.5A power supply.
Is this current constant from 1% to about 65%?
Click to expand...
Click to collapse
There is some fluctuation, but is roughly around 1A.

I have test 2 different charger
from "Battery Monitor Widget Pro" logs
with EP880 (1.5A max)
show ...................... 1.1A max
with 2 Amp charger
show .....................1.5A max

maxx228 said:
I have test 2 different charger
from "Battery Monitor Widget Pro" logs
with EP880 (1.5A max)
show ...................... 1.1A max
with 2 Amp charger
show .....................1.5A max
Click to expand...
Click to collapse
Thanks for the results. I have my Z3 by now and recorded some as well.
From 0 to 68%, it charges with 1000-1100 mA, then it goes into CV (constant voltage) mode and stays there until 95%. Then the curent drops slightly. The rest of the charging curve is not usable, as it was the first full charge my handset had. And the last for now, as I have to send it back due to a gap in the frame and microphone issues.
I'll post a complete curve when I have the new one and did a few cycles. What's clear for now:
1. Charging current with the stock charger is around 1.1 A max.
2. The phone charges up to 95% with 0.5% per minute. (Stock Charger)
3. It drops to 0.125% between 95% und 100%, likely to put less strain on the battery.
It's nice to see that there's appearantly support for higher charging currents. Though we should keep in mind that a higher current also means more stress for the battery, especailly when the phone is used while charging (higher battery temperature as the CPU also adds heat).

my Z3 came with the charging dock dk48.. it is rated at 1.8a, charging is fast

I can't speak to the Z3 (yet), but my Z1s charges nearly twice as fast on the magnetic charging dock as it does through the USB connection. As a result, I can leave my screen on at full brightness while on the dock and still charge. I would *expect* similar behaviour from the Z3.

Original charger: about 1.0A - 1.1A. Result: 3h 50p - 4h for fully charged.
Magnetic charging dock or cable: 1.5-1.6A. Spend only 2h 45p
I'm tesing Xiaomi MI Power Banki 10400mAh. First test: 1.6A, much faster than original charger. A bit surprise!
http://www.mi.com/sg/mipowerbank/

Zanr Zij said:
Original charger: about 1.0A - 1.1A. Result: 3h 50p - 4h for fully charged.
Magnetic charging dock or cable: 1.5-1.6A. Spend only 2h 45p
I'm tesing Xiaomi MI Power Banki 10400mAh. First test: 1.6A, much faster than original charger. A bit surprise!
http://www.mi.com/sg/mipowerbank/
Click to expand...
Click to collapse
The original charger is rated 1.5A, actual charging on Z3 is 1.0A.
Xiaomi is rated 2.1A, so I guess is reasonable to expect 1.5A actual charging from it.
For your magnetic charging dock or cable, are you using the original charger?
With the original charger, I'm getting the same result with or without dock.

Zanr Zij said:
Original charger: about 1.0A - 1.1A. Result: 3h 50p - 4h for fully charged.
Magnetic charging dock or cable: 1.5-1.6A. Spend only 2h 45p
I'm tesing Xiaomi MI Power Banki 10400mAh. First test: 1.6A, much faster than original charger. A bit surprise!
http://www.mi.com/sg/mipowerbank/
Click to expand...
Click to collapse
where did you get the magnetic charging cable?

AKK03 said:
The original charger is rated 1.5A, actual charging on Z3 is 1.0A.
Xiaomi is rated 2.1A, so I guess is reasonable to expect 1.5A actual charging from it.
For your magnetic charging dock or cable, are you using the original charger?
With the original charger, I'm getting the same result with or without dock.
Click to expand...
Click to collapse
With Mi Power Bank, I used micro USB cable, not magnetic.
I'm using Samsung Note 3 2.0A charger. Through micro USB port, I got lower current, about 1.0-1.2A but with magnetic cable 1.5-1.6A.
---------- Post added at 11:31 AM ---------- Previous post was at 11:30 AM ----------
Shudder123 said:
where did you get the magnetic charging cable?
Click to expand...
Click to collapse
Included in my Z3 retail box

Zanr Zij said:
With Mi Power Bank, I used micro USB cable, not magnetic.
I'm using Samsung Note 3 2.0A charger. Through micro USB port, I got lower current, about 1.0-1.2A but with magnetic cable 1.5-1.6A.
---------- Post added at 11:31 AM ---------- Previous post was at 11:30 AM ----------
Included in my Z3 retail box
Click to expand...
Click to collapse
you mean the USB cable?

Shudder123 said:
you mean the USB cable?
Click to expand...
Click to collapse
My Z3 Dual retail box has 2 cables: usb and magnetic

Zanr Zij said:
My Z3 Dual retail box has 2 cables: usb and magnetic
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Click to collapse
where did you get yours from? mine only came with a USB cable

I have a z3 dual .. I did not notice the second cable in the box. I have to check again

Charger Disappointment

Any one Disappointed with the charger they included with the Pure. The non removable cord just sucks and a poor choice in my opinion

I'm more disappointed at the size of the wall wart. They could have made more friendly to other power strip users.

razor237 said:
Any one Disappointed with the charger they included with the Pure. The non removable cord just sucks and a poor choice in my opinion
Click to expand...
Click to collapse
Pretty sure they did that so you couldn't just stick any usb charging cord in their...it'd most likely fry it.

The disappointing part is the my other cords not working with Android auto. Luckily I have a nexus 6, and the cord with its charger works.
Sent from my P01MA using Tapatalk

brholt6 said:
Pretty sure they did that so you couldn't just stick any usb charging cord in their...it'd most likely fry it.
Click to expand...
Click to collapse
I guess that could be a reason but highly doubt anything would be fried. Ive been using a nexus 6 turbo charger and before that i was using a note 4 charger to charge multiple android/apple devices without issue. This just limits what i can charge on a single charger now need a second lol

razor237 said:
I guess that could be a reason but highly doubt anything would be fried. Ive been using a nexus 6 turbo charger and before that i was using a note 4 charger to charge multiple android/apple devices without issue. This just limits what i can charge on a single charger now need a second lol
Click to expand...
Click to collapse
If you plugged in a charging cord that can't handle the increased power it sure could fry the cord. I feel ya though...it would be nice if it were a USB cord.

I'm glad it looks different.... My son knows NOT to plug his HTC M7 into this charger.
I can see if this was someones first Android, the lack of a micro-USB for data would be frustrating, but I have about 5 of these in my desk drawer and throughout my house and office, so it doesn't bother me.

Also having a fixed cord means you don't pulg some 'slow' cable in and not get any benefits. Out my 8-10 micro USB cables, only 2-3 get a decent charge speed.

tele_jas said:
I'm glad it looks different.... My son knows NOT to plug his HTC M7 into this charger.
I can see if this was someones first Android, the lack of a micro-USB for data would be frustrating, but I have about 5 of these in my desk drawer and throughout my house and office, so it doesn't bother me.
Click to expand...
Click to collapse
If a device that does not do Turbo Charging is connected, the charger should automatically adjust and charge it at regular speed. At least, that's what it is supposed to do. The Turbo Charger is supposed to be the single charger for all types.
Sent from my Nexus 10 using Tapatalk

Darnell_Chat_TN said:
If a device that does not do Turbo Charging is connected, the charger should automatically adjust and charge it at regular speed. At least, that's what it is supposed to do. The Turbo Charger is supposed to be the single charger for all types.
Sent from my Nexus 10 using Tapatalk
Click to expand...
Click to collapse
Good, because I know I'll find his phone on that charger some day

I still have my galaxy s6 nexus charger that is a fast charging and it seems to work fine with turbo charging
Sent from my LG-H345 using XDA Free mobile app

I think the reason they made the cable fixed is because a lot of cheaper usb cables use very thin wire gauges. Since this charger puts out a lot of current at varying voltages, it's very possible for a thin cable to overheat easier and catch on fire. And my guess is, they didn't want to take any chances

How do we determine if turbo charger is ongoing? I mean are there any indication? Coz when I plug in the TurboCharger that comes with it, sometimes TurboPower Connected shows at the bottom of the screen, sometimes not. Then when I check it on the Status, it says Charging over USB, not Charging over AC? Could be that my unit is defective? perhaps the charger? or the battery?

DrearierJester1 said:
How do we determine if turbo charger is ongoing? I mean are there any indication? Coz when I plug in the TurboCharger that comes with it, sometimes TurboPower Connected shows at the bottom of the screen, sometimes not. Then when I check it on the Status, it says Charging over USB, not Charging over AC? Could be that my unit is defective? perhaps the charger? or the battery?
Click to expand...
Click to collapse
I've got the same issue going on. My replacement from Amazon will be here Tuesday so I'll have time to mess with both and see if its the charger or what. Currently my turbocharging is hit or miss.

DrearierJester1 said:
How do we determine if turbo charger is ongoing? I mean are there any indication? Coz when I plug in the TurboCharger that comes with it, sometimes TurboPower Connected shows at the bottom of the screen, sometimes not. Then when I check it on the Status, it says Charging over USB, not Charging over AC? Could be that my unit is defective? perhaps the charger? or the battery?
Click to expand...
Click to collapse
I have this issue sometimes to. So if I need to know if im charging at turbo I use an app from the app store to see if states I'm turbo Charging or not. In the Charging screen it will say "normal or Turbo"
https://play.google.com/store/apps/details?id=com.gombosdev.ampere

DrearierJester1 said:
How do we determine if turbo charger is ongoing? I mean are there any indication? Coz when I plug in the TurboCharger that comes with it, sometimes TurboPower Connected shows at the bottom of the screen, sometimes not. Then when I check it on the Status, it says Charging over USB, not Charging over AC? Could be that my unit is defective? perhaps the charger? or the battery?
Click to expand...
Click to collapse
You can use a USB voltage/current indicator device to see it directly. I use one that displays voltage and current simultaneously, it cost about $10 on Amazon.
The Qualcomm QC 2.0 (which Motorola terms "TurboPower) spec is 5, 9, 12, and 20 volts, with up to 2 amps plus at each voltage. The QC 2.0 chargers I've tested including the Motorola charger included with the XT1575, range up to 9V and about 2+ A at 9V, with the higher voltage/amperage when battery is discharged to a lower SoC.. Haven't seen 12V or 20V, I think those only come into play when battery is discharged to nearly zero SoC.
Agree the reason the included charger has cable attached may be to ensure adequate wire gage. Too-thin wire will increase voltage drop across cable thus lengthening charge time in higher power modes. But the design here uses higher voltage to keep current down around the same 2A max current of USB 2.0 chargers, so cable heat will not be a problem with any old USB cable.
I will attest to the benefit of QC 2.0. I thought it was a useless gimmick until I started using it. It does effectively compensate for mediocre battery capacity.

My "Turbo Charging" icon displays properly, but doesn't charge very quickly if connected to a cheap extension cord.
Plugged into the wall, the charging Stull doesn't impress me that much
Sent from my XT1575 using Tapatalk

DrearierJester1 said:
How do we determine if turbo charger is ongoing? I mean are there any indication? Coz when I plug in the TurboCharger that comes with it, sometimes TurboPower Connected shows at the bottom of the screen, sometimes not. Then when I check it on the Status, it says Charging over USB, not Charging over AC? Could be that my unit is defective? perhaps the charger? or the battery?
Click to expand...
Click to collapse
It's defective. Call moto they will replace it for free. Just have to send copy of purchase receipt. Had the same issue.

The charge rate depends on how discharged the battery is when connected to charge.
More discharged (lower SoC, State of Charge) will drive a higher charge rate.
As to the difference between this Motorola TurboPower (aka Qualcomm Quick Charge 2.0), vs. other phones:
I've measured up to 1.4 amps at 5V nominal on other phones, that is about 9 watts charging power. That is max charge rate, with a very discharged battery. As the battery charges up closer to fully charged, the charge rate (power) is reduced. Total charging time from fully discharged to fully charged would be about 4-5 hours, give or take, for a typical cellphone battery.
For comparison, the QC 2.0 measurements I made with the MXPE: Up to 2.2 amps at 9V nominal with a phone battery discharged to about 40-50%. That works out to about 20 watts charging power. As with other Li-Ion battery charging systems, this also declines as the battery approaches fully charged. Total time to charge, from fully discharged to fully charged will be about 2-3 hours, give or take.
So the marketing claims about QC 2.0 are about right: A 75% improvement over conventional charging systems.
The biggest gains come when charging batteries discharged to lower SoC. If you are comparing charge rate/time of batteries discharged to only, say, 70-80%, you will not see as much of a difference with QC 2.0.
I'm not a QC 2.0 marketing shill, mind you. I pretty much ignored it, before buying the phone. But for this phone, QC 2.0 actually does a good job to compensate for the mediocre battery. I can run the battery down to 40-50%, put it on QC 2.0 charger in my car for my 30 minute commute, and it is charged to around 80+% when I arrive at my destination. There are a lot of QC 2.0 certified aftermarket chargers out there too, Qualcomm did a lot of work on the front end as part of bringing it to market. (Just make sure any AC charger is UL listed or equivalent, if you care about safety.
Caveats on cables: The cable does make a difference at higher charge rates. Thinner gage wire will impose a greater voltage drop at higher current, this will reduce power and thus increase charge time.
Typical USB cables are AWG 26-28. You can buy 20, 22, and 24 AWG USB cables. Some cables advertise heavier (22-24) gage wire for the power leads with standard (26-28) gage wire for the data leads. The aftermarket QC 2.0 AC chargers I bought listed their included cables as 20 gage.
Get the heavier gage if you want full QC 2.0 charging.

soufdallas said:
I still have my galaxy s6 nexus charger that is a fast charging and it seems to work fine with turbo charging
Sent from my LG-H345 using XDA Free mobile app
Click to expand...
Click to collapse
Just to check did you use S6 original charger ? And does it charge same with the turbo power charger provided by moto?
Sent from my Moto X Pure (2015) via Tapatalk

[Comparison] Updated Charging Speeds Comparison (QC 2.0/3.0, 10W Qi, Standard) S7/S7E

Method:
First I used my phone until the battery was below 15% in order to get a better picture of what the charging would look like over almost a full battery cycle. I did not start at the same battery percentage for each test because I did not find any benefit to doing so. I original did this for uniformity, but it did not make a difference after trying it using the more accurate equipment.
I then cleared my history in the Battery Monitor Pro Widget (BMW Pro) recording app which was used to log the battery [mV], battery temperature [F], time, and battery percentage changes. Once this was done I plugged in my USB Power Monitor, turned airplane mode on, removed the case, and let the phone charge. I started logging the data via my power monitor once the phone showed it was charging. From this point onward I let the phone charge without interrupting it until it reached 100%, then I let it charge for another 10-60 minutes to see if it was still drawing power from each charger. Once all of this was done, I exported my data collected from BMW Pro, emailed it to myself, and pasted it along with the USB Power Monitor data into an Excel spreadsheet. All of the data was then delimited to separate the clusters of data due to the way they were recorded, and subsequently graphed. The USB Power Monitor recorded data points every 0.36 seconds, while the BMW Pro took recordings every 5 seconds because I was having issues with the “real-time” recording option in the app working correctly.
All of the data was then graphed into the nice figures you will see below; each color reflects the same variable across all of the graphs to make reading them easier. I included a legend at the top of each set of graphs which should also help make it easier to read the data.
The most interesting part of this test is how cool the S7 Edge stays while charging, and the very marginal difference in overall charging time between QC 2.0/1.0. A 15-minute gap is marginal at best given the ‘big improvements’ Qualcomm claimed when launching the newer standards.
When conducting the wireless charging tests I think there is some error in the Samsung Fast Wireless charging data, so I plan on redoing it at some point. I already redid the Choetech one because it has a similar strangely long, but now it seems more in line with what I initially found before using the newer testing equipment.
I wanted to also quickly point out that both my HTC 10 and S7 Edge keep pulling current even after the phones show they are 100% charged. I’m not talking about a tiny amount; they both pulled ~1-5W+ after hitting 100% battery which is A LOT considering they are reporting to be fully charged. I verified this using 3 multimeters just to be sure. It appears as if Qualcomm, or the OEM’s are falsely reporting when the phone is actually charged, or there’s some other shady things going on here.
Another thing I wanted to mention is how the S7 Edge is so consistent in the way it charges the battery. It could be due to the lower rates Samsung uses (9V/1.67A max which is 15.03W) vs the HTC 10’s up to 18W that I’ve seen it pull. Just take a look at how the S7 Edge charges using QC 2.0 compared to the HTC 10 with lower temperatures, similar times, and a much more consistent overall charging curve.
If you look at the Tronsmart & Choetech QC2.0 tests, then you might notice the large difference between the two. The Tronsmart charger has a harder time holding onto the proper voltages, therefore it bounces around more from ~8.92V-9.03V (a 0.11V change) while the Choetech one ranges from 9.077V-9.092 which is a significantly smaller 0.015V range. The power control chip is responsible for controlling these voltages, and clearly the Choetech one has a better chip in it. This is especially important for external battery packs where efficiency really matters due to the limited amount of power they can store.
Equipment:
These tests were conducted using a series of different chargers. The same brand was used for both Quick Charge 2.0/3.0 tests to minimize experimental error; This trend remained the same was also done for the wireless charging tests
Wall Chargers:
Quick Charge 2.0: Tronsmart 18W charger 5V/2A, 9V/2A, 12V/1.5A
Quick Charge 3.0: Tronsmart 18W charger 3.6-6.5V/3A, 6.5-9V/2A, 9-12V/1.5A
USB inline Power Monitor:
XYZ Studio 0-24V, 0-3A USB Power Monitor
Tronsmart 5-12V USB multimeter (not used in this test, but was used in the older version)
Software/App(s):
Battery Monitor Widget Pro
Excel
Notepad++
Realterm (for the USB power monitor logging)
Legend
QC 2.0 Tronsmart S7
QC 2.0 Choetech
QC 1.0 Samsung
Choetech Fast Wireless Charger
Samsung Fast Wireless Charger
Samsung Wireless Charger
Normalized data Table
Full sized downloadable pictures of everything (data wise) you see above.

very good stuff!
maybe you could also record the heat at the hottest spot of the phone during charging? I think qc3 has the same charge rate but its able to change voltage to reduce creating waste heat compared to qc2.0.
my main concern with the s7 is the battery life, i know it won't last me a full 18hr day so i really need a portable fast qc2 charger that is pocketable, so maybe 5000mah, but have not seen such a small qc charger tho

Excellent post and well-made graphs. Thanks for your efforts.

well done. good info here.

sonhy said:
very good stuff!
maybe you could also record the heat at the hottest spot of the phone during charging? I think qc3 has the same charge rate but its able to change voltage to reduce creating waste heat compared to qc2.0.
my main concern with the s7 is the battery life, i know it won't last me a full 18hr day so i really need a portable fast qc2 charger that is pocketable, so maybe 5000mah, but have not seen such a small qc charger tho
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I don't have a thermal camera, or way to do that otherwise I gladly would. I can recommend a small 6000mah external battery pack if you want; Ill do a quick write up too (if you need one). The Samsung charger stayed at 9V the whole time per my multimeter's reading it just dropped go .5A near the end.
CLARiiON said:
Excellent post and well-made graphs. Thanks for your efforts.
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ISperfection said:
well done. good info here.
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Thank you, I will add in a standard wireless charger test (since my free Samsung one is enroute), and I can also get their fast charger too. I believe Samsung's fast wireless charger is only 7W so it would be slower than the Choetech one but it never hurts to see how fast it is.
Sent from my Nexus 6P using XDA Labs

@Pilz yes pls let me know of a qc2.0 small portable charger I think a quick 30mins charge to add 50% battery life mid day will be the best ease-of-use solution for me.
with the heat measurement, I'll be happy with your commercial grade temperature sensor that the great designer created for you, your fingers or better yet, the inside of your wrist.
preferably touching the same area on the phone every time and grading something like 1-5 hot/comfort levels maybe? just suggesting, no pressure

sonhy said:
@Pilz yes pls let me know of a qc2.0 small portable charger I think a quick 30mins charge to add 50% battery life mid day will be the best ease-of-use solution for me.
with the heat measurement, I'll be happy with your commercial grade temperature sensor that the great designer created for you, your fingers or better yet, the inside of your wrist.
preferably touching the same area on the phone every time and grading something like 1-5 hot/comfort levels maybe? just suggesting, no pressure
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I'll look into some methods to measure the heat easily while they're charging. I'm conducting the standard wireless charger test using my free Samsung wireless charger right now QC 2.0 chargers the fastest when you start at a very low battery percentage, so ideally you can achieve the results posted, but ambient temperature, starting % etc contribute to whether or not that's attainable. It's still a good estimate for 30 minutes of charging +/- 5% for other factors. The phone also chargers slower when the screen is in. The rate would go from 9V/1.67A to 9V/1.10A with the screen on. It was very consistent when I turned the screen on and off during the test.
Sent from my Nexus 6P using XDA Labs

i actually won't care about heat issues while charging this time round, it'll be like my moto defy, i just run it under cold water after a fast hot charge, wont be using the s7 for many years so not worried about moisture build up.
i have ordered a magnet micro usb cable that says its rated for 2.4A charging so hopefully it'll allow easy qc2.0 charging, no need to plug in, it magnetically snaps on and off.
i think the best charge setup would be a 30mins quick charge (magnet) on the office desk than a 60mins wireless qi charge, carried in your pocket type situation.

sonhy said:
i actually won't care about heat issues while charging this time round, it'll be like my moto defy, i just run it under cold water after a fast hot charge, wont be using the s7 for many years so not worried about moisture build up.
i have ordered a magnet micro usb cable that says its rated for 2.4A charging so hopefully it'll allow easy qc2.0 charging, no need to plug in, it magnetically snaps on and off.
i think the best charge setup would be a 30mins quick charge (magnet) on the office desk than a 60mins wireless qi charge, carried in your pocket type situation.
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Did you by chance order the Znaps? I backed them ages ago for both the Type-C and micro USB connectors. If I'm lucky I might eventually maybe sometime before I die receive them. I don't expect much from a kickstarter campaign that's been delayed this much. I'm finishing up the standard Qi/PMA charging test. It shouldn't matter the standard it's using but if it's important the Samsung wireless charger is actually PMA.
Sent from my Nexus 6P using XDA Labs

OP Updated
-Standard wireless charging test added
-All figures updated to reflect the new test

no, its from aliexpress, $10 or so, ive seen cheaper so I would say the poor Kickstarters had their designs stolen and made cheaper... im not sure, i just buy what's available and easy. just search magnet usb cable, you'll find heaps, the more exy ones claim 2.4A current rating.

sonhy said:
no, its from aliexpress, $10 or so, ive seen cheaper so I would say the poor Kickstarters had their designs stolen and made cheaper... im not sure, i just buy what's available and easy. just search magnet usb cable, you'll find heaps, the more exy ones claim 2.4A current rating.
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Let me know how it works, I rarely use cables to charge my phone becusse I hate micro USB ports plus I'm used to the type C on Nexus.
Sent from my Nexus 6P using XDA Labs

Have you tried charging with 18w charger(not wireless) rather than the samsung one?

peachpuff said:
Have you tried charging with 18w charger(not wireless) rather than the samsung one?
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Yes it doesn't matter becuase the phone is only rated for 15.03W so it can't use more than that no matter the charging method. See screenshot below:
Sent from my Nexus 6P using XDA Labs

@Pilz yeah sure, it should arrive in a couple of weeks. i hate plugging in as well, even with the usb type c, its reversible but finding the port isn't always easy, they should have made the port surface like a cone or funnel so your guided into the port more easily.
the use of the magnet is awesome, Sony's external side charging pins have been around for ages, its really the charging current and quality of the copper that im worried about.

sonhy said:
@Pilz yeah sure, it should arrive in a couple of weeks. i hate plugging in as well, even with the usb type c, its reversible but finding the port isn't always easy, they should have made the port surface like a cone or funnel so your guided into the port more easily.
the use of the magnet is awesome, Sony's external side charging pins have been around for ages, its really the charging current and quality of the copper that im worried about.
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I just wish they had Type-C because its so much better especially after using it for a while now.
Sent from my Nexus 6P using XDA Labs

I never knew that plugging in a micro USB cable was so difficult. It could be one of those things that once you try a better alternative (type c maybe?) makes you ask how you lived without it, but I don't see what the fuss is about just yet.
I've used wireless chargers for years (way back in the NExus 5 days even) including in the car. Any word on fast wireless charging and heat? I'm worried about it pumping a ton of heat on to the back of the phone especially for extended periods such as overnight.

xxaarraa said:
I never knew that plugging in a micro USB cable was so difficult. It could be one of those things that once you try a better alternative (type c maybe?) makes you ask how you lived without it, but I don't see what the fuss is about just yet.
I've used wireless chargers for years (way back in the NExus 5 days even) including in the car. Any word on fast wireless charging and heat? I'm worried about it pumping a ton of heat on to the back of the phone.
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Micro USB is just more of a hassle becusse usually you need to angle it while inserting it into the phone. Type-C is nice becuase there no worrying about how I need to orient a cable when I'm half awake plugging my phone in. It's hard to understand why its nice until you use it everyday.
I haven't been able to measure the heat yet, but the phone is cooler using the 10W wireless fast charger than it is using QC 2.0. The phone isn't hot to the touch but it is warm using the fast wireless charger. I'll try to download a battery monitoring app that measures battery temp while it's charging. This method won't be as accurate as physically measuring it, but it should still give a good indication of the temperature.
Edit: I tested the temperature using GSAM battery montior via the fast wireless charger fro ~6% charge (28-34%) and the temperature rose 6 [F], the I let the phone cool and tested QC 2.0. The phone was charger for 6% to keep things cosnistent with a temperature change of 5[F]. I would need to find a way to more accurately measure these values because that quick test doesn't really mean anything at this point.
Sent from my Nexus 6P using XDA Labs

Does the Adaptive Fast charging by Samsung with with QC 2.0 compatible devices or is it only exclusive to Samsung?

ahrion said:
Does the Adaptive Fast charging by Samsung with with QC 2.0 compatible devices or is it only exclusive to Samsung?
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It's just a QC 2.0 charger from what I can tell. I have a battery pack that will charge using QC 2.0 so I can test it using my multimeter
Sent from my Nexus 6P using XDA Labs

Why on earth was fast charging disabled for this nexus?

*Deleted*

They didn't disable anything - it doesn't have the Qualicom Quick Charge variant, but it does have it's own variant of a rapid charge.
Using two wall chargers I have here and a Benson certified USB-C Cable, one of the wall chargers support QC2.0 and the other QC3.0. Both charged "normally" reporting on the screen as "Charging".
Using the stock USB-C wall charger that came with my 6P, using EX Kernel and the stock kernel from January 8.1 stock ROM, both reported "Charging Rapidly". I switched kernels using EXKM and a backup of the stock Kernel to test this.
Also, I bought a Tronsmart USB-C Car Charger, and it too reports "Charging Rapidly".

ZuneYT said:
Hey everyone,
So I got my nexus 3 Months ago, I just found out NOW that it is not fast charging at all. I bought a new ANKER charger and wire with it and its just charging slowly which got me really annoyed as I wasted money on it because I thought it had nothing to do with the phone at all. I did some digging around and the maker of franco kernel found out that bloody google disabled the bloody fast charging on the 6P?! What kind of solution is that? I mean they could of at least gave us options on whether to disable or enable it in the phone. Is there ANY way to get fast charging enabled on this phone?
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Nexus 6p just charges at a higher amperage then most average phones. As long as you use a charger with 5V/3A you should get charging rapidly. Just remember as the battery percentage increases the amps get lower. Use an app like ampere to make sure your getting close to 3000mA. I think the highest charge I seen on the stock plug was like 2800mA.

Well I bought an ANKER Charger and usb cable with it which definitely says it is fast charging compatible. When it comes to charging my phone I got a small text on my lock screen showing me how much charge there is going to the phone while charging. The average charging mAh is 1,400 and the voltage is 4.3V. I am pretty sure that it has reached a higher charge rate....I'll have to keep an eye on it. Do you think thats an acceptable charging rate?

It's not just about amperage, because some of their chargers are a whopping 8A - https://www.anker.com/ca/products/108/203/Wall-Chargers
Anker doesn't support the variant of rapid charging that the 6P accepts, therefore it only will negotiate down to a normal "charging" rate, which IIRC is exactly what you're getting.

ZuneYT said:
Well I bought an ANKER Charger and usb cable with it which definitely says it is fast charging compatible. When it comes to charging my phone I got a small text on my lock screen showing me how much charge there is going to the phone while charging. The average charging mAh is 1,400 and the voltage is 4.3V. I am pretty sure that it has reached a higher charge rate....I'll have to keep an eye on it. Do you think thats an acceptable charging rate?
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That's kind of low this one from the comments works. Sorry it's Canadian amazon but maybe can find in your are.

Exodusche said:
That's kind of low this one from the comments works. Sorry it's Canadian amazon but maybe can find in your are.
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Well good news I found the plug from my past orders I just forgotten to look on my account haha.
This is it here https://www.amazon.co.uk/gp/product/B017VXARME/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1

ZuneYT said:
Well good news I found the plug from my past orders I just forgotten to look on my account haha.
This is it here https://www.amazon.co.uk/gp/product/B017VXARME/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1
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Noice yeah Amazon is good that way!! ?

I'm having this problem too. I used to be able to rapid charge using anker usb c to usb c but now it just seems to charge normally not rapid charge.
Anyone know of a fix, let me know.
Thanks